vhf band造句

• Electromagnetic compatibility and radio spectrum matters . electromagnetic compatibility for radiotelephone transmitters and receivers for the maritime mobile service operating in the vhf bands
  电磁兼容性和无线电频谱. vhf波段工作的海上移动设备用无线电话发射机和接收机的电磁兼容性
• Telecommunications - electromagnetic compatibility and radio spectrum matters - radiotelephone transmitters and receivers for the maritime mobile service operating in vhf bands - part 1 : technical characteristics and methods of measurement v1 . 3 . 1
  电信.电磁兼容性和无线电频谱情况.工作在甚高频带的海上移动业务用无线电话传送机和接收机.第1部分:技术特性和测量方法
• Proposed by the european broadcasting union , eureka 147 is widely applied in europe , canada and part of asia . the technology operates in the new l - band or vhf band iii . its 1 . 5 mhz bandwidth can accommodate a maximum of about 1 . 2 mbps of data
  Eureka147是现时欧洲广播联会（ europeanbroadcastingunion ）推广的制式，被欧洲、加拿大和部份亚洲地区所采用，它的设计是需要另外在新的Ｌ频带或甚高频带vhfbandiii操作，频宽1
• Rthk tested dab in l band in 1998 . since then , dab technologies have undergone improvements ; rthks current test of dab vhf band iii is expected to offer a better indoor and outdoor performance . moreover , the price of the receivers has gone down substantially
  港台于1998年测试dab时，是以l频带l band进行，这几年来dab技术上有所改进，今次dab测试极高频带vhf band iii ，相信有较佳的室内和室外接收的效果，而接收器的价格也经已回落。
• Many technologies of electrically small antennas and wide band antennas are discussed in theory , simulation and experiment . and some novel electrically small or wide band antennas are proposed . the loaded monopole is analyzed in depth integrating the genetic algorithm ( ga ) with the method of moments ( mom ) in order to increase the gain and decrease the vswr of antennas used at hf / vhf band
  在本论文的研究过程中,通过合理利用各种现有的天线宽带化和小型化的理论成果、有效的综合各种技术措施,运用矩量法和遗传优化算法等数值方法,深入研究了加载单极子天线问题,旨在全面提高高频/甚高频频段内的天线增益和降低电压驻波比,以获得较高增益的、基本满足驻波要求的小型超宽带天线。
• Proposed by the european broadcasting union , eureka 147 is widely applied in europe , canada and part of asia . the technology operates in the new l - band or vhf band iii . its 1 . 5 mhz bandwidth can accommodate a maximum of about 1 . 2 mbps of data
  Eureka 147是现时欧洲广播联会european broadcasting union推广的制式，被欧洲加拿大和部份亚洲地区所采用，它的设计是需要另外在新的频带或甚高频带vhf band iii操作，频宽1 . 5mhz ，最大可传送约1 . 2mbps的数据声音的运算是使用48khz和16bit采样率，然后用mpeg1 - layer2的方式来压缩，若作单声道的广播，系统可容许弹性地使用64 - 192kbps的速率，普通情